Theory has long been the bastion of women who work in corporate environments who don't necessarily have corporate tastes—and for their new footwear collection for fall 2010, Theory brings its brand of pared-down chic with a collection of platform lace-up booties and towering Tribute-esque pumps. In a palatable gray-scale, we imagine the ankle boots (in cozy flannel and sleek leather) going just as nicely with ribbed tights and wool dresses come fall as it would with a skirt-suit. Available exclusively at Theory.com, the shoes will cost you between $415-$596. Expensive, yes, but we imagine that the folks at Theory have extended their characteristic top-notch-construction to these shoes as well. Consider these a fashion-friendly fall investment.